linux-kernel - Re: [PATCH v4 4/7] pwm: cros-ec: Accept more error codes from cros_ec_cmd_xfer

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Message-ID: <20200806183513.nbaeonm5sevjvxkb@pengutronix.de>
Date:   Thu, 6 Aug 2020 20:35:13 +0200
From:   Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
To:     Guenter Roeck <linux@...ck-us.net>
Cc:     Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        Jonathan Cameron <jic23@...nel.org>,
        Benson Leung <bleung@...omium.org>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Lee Jones <lee.jones@...aro.org>,
        Gwendal Grignou <gwendal@...omium.org>,
        Brian Norris <briannorris@...omium.org>,
        Yu-Hsuan Hsu <yuhsuan@...omium.org>,
        Prashant Malani <pmalani@...omium.org>,
        linux-iio@...r.kernel.org, linux-input@...r.kernel.org,
        linux-pwm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 4/7] pwm: cros-ec: Accept more error codes from
 cros_ec_cmd_xfer_status

Hello,

On Thu, Aug 06, 2020 at 08:33:05AM -0700, Guenter Roeck wrote:
> Since commit c5cd2b47b203 ("platform/chrome: cros_ec_proto: Report command
> not supported") we can no longer assume that cros_ec_cmd_xfer_status()
> reports -EPROTO for all errors returned by the EC itself. A follow-up
> patch will change cros_ec_cmd_xfer_status() to report additional errors
> reported by the EC as distinguished Linux error codes.
> 
> Handle this change by no longer assuming that only -EPROTO is used
> to report all errors returned by the EC itself. Instead, support both
> the old and the new error codes.
> 
> Add a comment describing cros_ec_num_pwms() to explain its functionality.
> 
> Cc: Gwendal Grignou <gwendal@...omium.org>
> Cc: Yu-Hsuan Hsu <yuhsuan@...omium.org>
> Cc: Prashant Malani <pmalani@...omium.org>
> Cc: Brian Norris <briannorris@...omium.org>
> Acked-by: Thierry Reding <thierry.reding@...il.com>
> Signed-off-by: Guenter Roeck <linux@...ck-us.net>

Acked-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | https://www.pengutronix.de/ |

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